Marine Electronics
LUCKY Wireless/Wired 2 in 1 Portable Sonar Fish Finder
Display:2.4inch TFT color LCD Depth Capability: Cable 328feet(100m)/Wireless 147feet(45m) Sonar Coverage: 45 degrees beam angle in 200Khz(Cable transducer)/ 90 degrees beam angle in 125Khz(Wireless)
https://www.bizrate.co.uk/marineelectronics/lucky-wireless-wired-2-in-1-oid8832730797.html